RADARSAT-2 products are characterized by their processing level. Two main categories of processing levels are available: Path-oriented and Map-oriented. Most products are delivered in GeoTIFF format.
Images acquired with the RADARSAT satellites can be processed in a number of different ways. Path-oriented processing produces products that are oriented in the geometry of the swath. Points on the Earth are determined from the orbital data. Map-oriented processing produces products that provide map coordinates, typically with "North Up". Points on the earth may be located more precisely by using ground control points (GCPs). Map-oriented processing is available for all RADARSAT imaging modes with the exception of ScanSAR.
RADARSAT-2 Product Table
RADARSAT-2 supports two file formats: Geo TIFF and NITF 2.1. The GeoTIFF format (Geographic Tagged Image File Format) is a widely used and versatile raster file format that is platform independent. This popular format can be read easily by most Geographic Information Systems (GIS), image processor and Computer Aided Design (CAD) software. The GeoTIFF format supports a maximum file size of 4GB, so some RADARSAT-2 modes that exceed this limit (e.g. Extra-Fine) may be processed into the BigTIFF format.
Single Look Complex (SLC): Processing level data is stored in slant range. It has been corrected for satellite reception errors, and includes latitude and longitude positional information. In addition, Single Look Complex data retains the optimum resolution available for each mode and the phase and amplitude information of the original SAR data. Data cannot be directly viewed as images by all software.
Path Image (SGF, SCF, SCS): Processing aligns the scene parallel to the satellite's orbit path. Data has been converted to ground range and may be multi-look processed.
Path Image Plus (SGX): Processing uses smaller pixel spacing than Path Image processing as needed to retain full RADARSAT mode resolution. This will enhance your ability to make detailed analyses of point targets or to obtain subsequent spatial information if required. However, it will create a digital file that may be considerably larger than a Path Image product.
Map Image (SSG): Processing corrects the scene to a map projection.
Precision Map Image (SPG): Processing corrects the scene to a map projection and uses Ground Control Points (GCPs) to improve positional accuracy.